【Gem5】gem5模拟器中三种访存模式Atomic、Timing、Functional的总结对比_空空7的博客-CSDN博客

Gem5 // 谭邵杰的计算机奇妙旅程 (ustc.edu.cn)

• GEM5是一款模块化的离散事件驱动全系统模拟器，由C++与python编写
• 它结合了M5（多处理器模拟器）和GEMS（存储层次模拟器）中最优秀的部分，是一款高度可配置、集成多种ISA和多种CPU模型的体系结构模拟器。
  • M5是由Michigan大学开发的一款开源的多处理机模拟器，受到了业内的广泛关注，很多高水平论文都采用M5作为研究工具。
  • 另一方面，Wisconsin推出的GEMS能够对储存层次进行详细而灵活的模拟，包括对多种不同的cache一致性协议和互联模型的支持。
  • 目前的GEM5是M5和GEMS的一个紧耦合版本。
• GEM5已经能够支持多种商用ISA，包括X86、ARM、ALPHA、MIPS、Power、SPARC等，并且能够在X86、ARM、ALPHA上加载操作系统。

gem5/gem5: The official repository for the gem5 computer-system architecture simulator. (github.com)

gem5: The gem5 simulator system

The gem5 Simulator

This is the repository for the gem5 simulator. It contains the full source code for the simulator and all tests and regressions.

The gem5 simulator is a modular platform for computer-system architecture research, encompassing system-level architecture as well as processor microarchitecture. It is primarily used to evaluate new hardware designs, system software changes, and compile-time and run-time system optimizations.

The main website can be found at http://www.gem5.org.

Getting started

A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction.

Building gem5

To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of these tools.

Once you have all dependencies resolved, execute scons build/ALL/gem5.opt to build an optimized version of the gem5 binary (gem5.opt) containing all gem5 ISAs. If you only wish to compile gem5 to include a single ISA, you can replace ALL with the name of the ISA. Valid options include ARM, NULL, MIPS, POWER, SPARC, and X86 The complete list of options can be found in the build_opts directory.

See https://www.gem5.org/documentation/general_docs/building for more information on building gem5.

The Source Tree

The main source tree includes these subdirectories:

• build_opts: pre-made default configurations for gem5
• build_tools: tools used internally by gem5's build process.
• configs: example simulation configuration scripts
• ext: less-common external packages needed to build gem5
• include: include files for use in other programs
• site_scons: modular components of the build system
• src: source code of the gem5 simulator. The C++ source, Python wrappers, and Python standard library are found in this directory.
• system: source for some optional system software for simulated systems
• tests: regression tests
• util: useful utility programs and files

gem5 Resources

To run full-system simulations, you may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of these resources can be obtained from https://resources.gem5.org.

More information on gem5 Resources can be found at https://www.gem5.org/documentation/general_docs/gem5_resources/.

Getting Help, Reporting bugs, and Requesting Features

We provide a variety of channels for users and developers to get help, report bugs, requests features, or engage in community discussions. Below are a few of the most common we recommend using.

• GitHub Discussions: A GitHub Discussions page. This can be used to start discussions or ask questions. Available at https://github.com/orgs/gem5/discussions.
• GitHub Issues: A GitHub Issues page for reporting bugs or requesting features. Available at https://github.com/gem5/gem5/issues.
• Jira Issue Tracker: A Jira Issue Tracker for reporting bugs or requesting features. Available at https://gem5.atlassian.net/.
• Slack: A Slack server with a variety of channels for the gem5 community to engage in a variety of discussions. Please visit https://www.gem5.org/join-slack to join.
• [email protected]: A mailing list for users of gem5 to ask questions or start discussions. To join the mailing list please visit https://www.gem5.org/mailing_lists.
• [email protected]: A mailing list for developers of gem5 to ask questions or start discussions. To join the mailing list please visit https://www.gem5.org/mailing_lists.

Contributing to gem5

We hope you enjoy using gem5. When appropriate we advise charing your contributions to the project. https://www.gem5.org/contributing can help you get started. Additional information can be found in the CONTRIBUTING.md file.